Fruit-drier



(No Model.) Y2 sheets-she# 1-.

R. EJBURNS.

FRUIT DRIER. No. 268,619.` Patented Deo. 5,1882. j

INVENTUR- @mn 9mm.

mwwm' 2 Sheets-Sheet 2.

(No Model.)

FRUIT DRIER.

Patented Dec. 5, 1882.

NEEEEE- INVENIUE PEYERS. Phuiu-Lilhegnphe. Washington. D. C.

UNITED STATES VPATENT OFFICE.

ROBERT E. BURNS, OF SAN FRANCISCO, CALIFORNIA.

FRUIT-Dalen.

SPECIFICATION forming part of Letters Patent No. 268,619, dated December 5, 1882. Application tiled June 8, 1882. (No model.)

driers for which Letters Patent of the United States were granted to me on the 9th day of November, A. D. 1880, No. 234,115, and also on the 27th day of December, A, D. 1881, No. 251,408; and the objects of my present improvements are, first, to provide an improved arrangementof the drying-chambers and the means for regulating the temperature therein 5 second, to provide a means whereby the waste heat from the lye-pot furnace may be utilized for the defecation of fruit; and, third, to provide certain auxiliary drying-compartments, frames, or trays, whereby the residue or surplus heat from the primary drying-compartments may be utilized and the drying capacity ofthe machine or apparatus greatly increased. These objects I accomplish by the device illustrated in the accompanying drawings, in which- Figure l is a perspective view of my improved machine. Fig. 2 is aground plan. Fig. 3 is a vertical sectional view of the ,lyepot and its furnace. Fig. 4is a longitudinal vertical section through the main dryin g-chamber. Fig. 5 is a transverse vertical section through the same.

Similar letters of reference are used to designate like parts throughout the several views.

A is a rectangularfurnace, provided with the usual door and draft openings in front and witllli cold-air openings B B through the side Wa s.

The combustion-chamber C consists of arectangular box of sheet-iron, which lits within the walls of thefuruace-chamber and is provided with a return-liuc, D. The flames and products of combustion enter the return-line at its rear end, and pass out at its front end, and enter the double ue E, travel toward the rear end of the furnace-chamber and enter an auxiliary o r fume chamber, Q, extending at right.

struct a second chamber,F, of like dimensions as the first, aud at the front end of this secondary chamber I build the lye-pot furnace G, having a fire-door iu front and a smoke-iueiu the rear, connected with the pipe H, leading to thecombustiou-chamber C, and haviuga damper or valve, I.

The eXit-pipe of the double flue E is also provided with a damper, J.

Around the top of the furnace-wall a ledge is formed to support a tray, K, filled with mor tar or cement, and'having a number of openings, L, controlled by dampers or slides M. These openings are placed beneath the center of veach drying compartment or chamber N.

Over each opening L, I place a deiiectiug plate or tray, K', made of metal and filled with cement, and mounted upon legsrestiugon the mortar lling ofthe tray K.

Thedryingchambers Nare constructed si mi lar to those described iu my before-mentioned Letters Patent No. 251,408, with this exceptibn, that the opening or passa-ge O for the moisture-laden heated air is opened or closed by drawing forward or sliding back the fruittray immediately below the air-tight finishingchamber l?. The air-passages() communicate with a flue, S, situated to the rear of the finish ing-chamber and discharging into the steambox T, provided with a chimney, U, and attached to the rear of the main drier by means of clips, and supported by legs V, resting on the top of the auxiliary drying-chamber Q.

Ventilating-doors W may be placed on the roof of the main drier, as shown in Fig. `1, and short posts X should be placed on the roof to support a large drying-frame, Y, the edges of which overhang the face-walls of the main drier, so as to catch and utilize all escaping and radiated heat, which in all other driers is lost.

It' desirable, a skylight maybe placed over the large drying-frame Y, and the natural heat of the sun be used to assist the articial heat.

When a reis built in the furnace Gi the resultant smoke and a great portion of the heat will pass through the pipe H and enter the combustion-chamber C, thereby increasing the heating capacity of the main furnace, and at the same time Warming the chamber F Iwith heat radiated from the said pipe H. Should this degree of heat not be sufcient, then the IOC slide of the air-passage Z in the wall of the main furnace may be drawn back and heat from the main furnace or combustion chamber be admitted. The heat arising from thefurnace-chambers passes up through the openings L and out under the deiiecting-plate K', and passes upward on all sides of the Wooden or lower tray, a, and from thence-passes upward to the top of the drying-chamber, being de.

ected from side to side and from front to rear in the manner already described in my beforementioned Letters Patent No. 251,408. The moisture-laden heat, after passing out into the flue S, enters the steam-box T, and by imparting considerable warmth to it I am enabled to dry any fruit that may be placed thereon. Should there be any gases, fumes, or overplus of heat received into the said steam-box, they will find an exit through the chimney U. The products of combustion from the main furnace, together with those from the lye-pot furnace, pass through the double flue E into the conducting-pipe b and enter the fume-chamber Qf its entrance or low being regulated by the damper or slide J, and by raising the temperature in said chamber accelerates the drying of fruit placed in or on trays laid upon the top or roof of the chamber Q. The residue of heat and smoke passes up through the smoke-stack R and escapes into the open air.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

l. In a fruit-drier, the combination of the combustion-chamber C, having a return-due, D, communicating with a double pipe. E, discharging into an auxiliary fume-chamber, Q, substantially as shown and described.

2. In afruit-drier, the combination,with the main furnace or combustion chamber C, of the lye-pot furnace Gr and connecting-pipe H, having damper I, and discharging into the comdescribed.

3. In a fruit-drier, the combination of the main chamber A, having combustion-chamber C, communicating with the double pipe E by means ofthe return-due D, the connecting-pipe b, having damper J, and the auxiliary dryingchamber Q, provided with smoke-stack R, substantially as shown and described.

4. In a fruit-drier, in combination with the main furnace and drying chambers thereof, the secondary or duplicate chamber F, lye-pot furnace G, pipe H, and air-passage Z, substantially as shown and described.

5. In a fruit-drier, the combination of the damp air-passages O, located at the top of the rn'ain drying-chamber N, the flue S, situated below and to the rear of the finishing-chamber, and the steam-box T, provided with pipe or ,chimney U, substantially as specified.

6. In combination with a fruit-drier constructed as shown and described, the overhanging screen or tray Y, placed upon suitable supports above the roof of said drier, substantially as and for the purpose set forth and specified.

7. In a fruit-drier, the combination of the main furnace and drying chambers, the secondary or duplicate furnace and drying chamber, the iinishing-chamber, and the overhangingscreen or tray, substantially as shown and described.

In testimony that I claim the foregoing I have hereunto `set my hand and seal this 10th day of May, 1882.

ROBERT E. BURNS.

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